Appeal No. 2003-1836 Page 8
Application No.10/085,590
value . . . , (3) is the measured temperature above or below specified limits . . . , (4) is
the motor speed feedback signal more than fifteen percent off from the specified speed,
(5) is the motor oil fault signal active, and (6) is the inverter fault signal active." Col. 10,
ll. 45-54 (emphases added). "If any of these fault conditions occurs, the error is logged
in the system's memory 72, noted on the display 80, and the system switches to
mechanical mode -- so that the mechanical backup system will take over control of
the system." Id. at ll. 55-59. Furthermore, "[i]f the compressor's capacity exceeds the
load even when running at its minimum speed, the controller will shut down the motor
and set the state to CYCLEOFF. . . . " Col. 12, ll. 13-16. "Serious faults are also
denoted by activating the buzzer 84." Col. 10, ll. 60-63.
Although the "few specific embodiments," col. 13, l. 32, described by Persem
feature "a reciprocating compressor," col. 5, ll. 28-29, not a scroll compressor, the
reference emphasizes that "the description is illustrative of the invention and is not to be
construed as limiting the invention." Col. 13, ll. 32-34. Furthermore, Persem
recognizes that "[v]arious modifications may occur to those skilled in the art. . . ."
Col. 13, ll. 34-35.
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